The Church of St. Lawrence was built in the 13th century, probably only after the foundation of the town in 1250. Construction works could last until the end of the third quarter of the 13th century. As early as 1285, there was a first record of the local priest Rudolf, who then appeared as a witness on the document.
In 1428, the Hussites plundered and burned down the church of which bare walls remained. The reconstruction continued with problems until 1472, when the church was re-consecrated. During it, a new, larger chancel was built.
In 1560, the church was damaged again by a fire, after which its facades were covered with Renaissance decorations (corner bossage) during renovation. The church survived in this condition until 1729-1733, when it was rebuilt in the baroque style at the request of the bishop of Wrocław, Francis Ludwik von Neuenburg. The old nave and the gothic chancel were almost completely rebuilt, the older walls were dismantled and only partially used in new building. In 1841, two early modern helmets were erected by the carpenter Francis Berger on the western towers, and at the same time the front wall between the towers was raised to the height of the crowning cornice. The helmets of the towers were replaced once again at the beginning of the 20th century.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.